Olive Weather Forecast

    • 64
    • 82

    Mostly Sunny

    • 66
    • 87

    Mostly Sunny

    • 66
    • 86

    Mostly Sunny

    • 69
    • 90

    Mostly Sunny

    • 72
    • 95

    Mostly Sunny

    • 75
    • 97

    Sunny

    • 76
    • 98

    Sunny

Today 28 Sep Orange County Inland

Mostly sunny. Highs 93 to 96 towards the coast to 98 farther inland.

Tonight 28 Sep Orange County Inland

Mostly clear. Lows 57 to 64. Areas of Winds southeast to 10 Mph this evening becoming light.

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Olive Temperature Statistics

September Temperature

Fullerton, Fullerton Municipal Airport (8.1 miles)

  • Lowest 2 September, 2026

    63.6 °F

  • Average September

    77.5 °F

  • Highest 9 September, 2026

    108.6 °F

Climate (2021–2026)

Fullerton, Fullerton Municipal Airport (8.1 miles)

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  • Average Low 2021–2026

    57.1 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    76.9 °F
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